1.

What is the net workdone (in calories)by 1 mole of monatomicidealgas in aprocess described by1, 2,3,4 in givenV-T graph .Use :R = 2 cal //"moleK"ln 2= 0.7

Answer»

`- 600 CAL`
`- 660 cal`
` + 660 cal`
` + 600 cal`

Solution :`W_(12) = - nRT In (V_(2))/(V_(1))= - 420cal `
`W_(23) = 0 P DELTAV =- nRDeltaT = -600 cal `
`W_(34) = - 1 xx 2 xx 600 xx In 4 = 1680`
`W= 6600 cal ("i.e. work is done on the gas ")`
work doneby thegas = -660 cal


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